Rest target genes are inappropriately expressed in Mrestsbu29/+ embryos. RNA Whole-mount in situ hybridization at 24 h and 6 dpf for Rest target genes for Mrestsbu29/+ and Zrestsbu29/+. Ectopic expression (white bracket or arrow) is observed with probes for snap25a (A,B), snap25b (E,F), and syt4 (I,J) but not nfsa (M,N) or amph (Q,R) in the hindbrain of Mrestsbu29/+ embryos at 24 hpf. Increase expression in Mrestsbu29/+ observed at 6 dpf in with nsfa (O,P) and amph (S,T) but not snap25a (C,D), snap25b, or syt4 probes. OV, Otic vesicle; MB, midbrain.